男性细胞内液约占体重的（）。
A.10%
B.20%
C.30%
D.40%
E.50%
参考答案：D
Dave lost his job and was short of money, so _____ his flat and move in with his brother. [ ]
A. that he did was to sell
B. what he did sell
C. what he did was to sell
D. what he did sold
七节骨
